Royal Spoonbills, Nightbird query

["Sharon Rusk" <>]

Hi Paul!

On your description it's highly likely that it was the call of the Koel, I 
hear them everyday down on the coast, these calls start at the finish of the 
"Kooooeeel "calling period.
The female gives a loud high pitched call, like a "Rubber Ducky" toy 
amplified, and the male gives the "wirra wirra wirra" call in reply. The 
female also gives a high pitched growl when
being harrassed, these calls, along with a couple of others from the male, 
can come at any time of the day or night so I'd be putting my money on the 
Koel making the sounds.
Cheers

Bob Rusk